Improvement in expanding nozzles for hose



w,` LEYGGETT. Expanding-Nozzles for Hose.

Patented Dec. 8,1874.

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NITED STATES PATENT OFFICE.

WILLIAM LEGGETT, OF NEW YORK, N. Y.

IMPROVEMENT IN EXPANDING NOZZLES FOR HOS-E.

Specification forming part of Letters Patent No. 157,527, dated December8, 1874; application filed September 30, 1874.

To all whom it may concern.'

Be it known that I, WILLIAM LEGGETT, of New York city, in the State ofNew York, have invented certain Improvements in Expanding Nozzles forHose, of which the following is a specification:

A patent which has recently been allowed me describes a series ofexpanding staves, hinged at one end to the end of a fixed tube ornozzle, and caused to overlap more or less upon eachother by suitablemeans, as the nozzle is desired to be expanded or contracted. It alsodescribes a lining of thin sheet metal, in four or other convenientnumber of pieces, adapted to be pressed outward by the force of theissuing jet, and to form a smooth lining material for what wouldotherwise be the ridged edges of the staves.

. I have discovered, by my experiments therewith, that water is liableto leak laterally outward through the joints, even when thus guarded bythe overlapping thin lining. The loss of tbe water is not `ofimportance, but the annoyance to the operator, in consequence of watertrickling down on the nozzle, is considerable under ordinary conditions,and in intense freezing weather may become serious. My present inventionprovides for stopping all this lateral escape. Y

I have devised a continuous lining of rubber, with ecient means forholding it firmly in place at or near the hinged ends of the staves.This lining is pressed outward by the force of the water against theinner surface' of the thin sheet-metal lining previously hdescribed. Therubbershould be glazed or made as smooth as possible, and its outer endshould coincide or be fiush with the outerends ofthe lining metal.

The following is a description of what I consider the best means ofcarrying out the invention. The accompanyin gdrawin gs form a part ofthis specification.

Figure l is a vertical section, and Fig. 2 is an end view. Fig. 3 is asection of a portion on a larger scale.

Similar letters of reference indicate corresponding parts in bothfigures.

A is the fixed tube, which forms the foundation for my peculiarconstruction. A is the stout outer thread thereon, which secures itwithin the ordinary butt, (not represented.) B are the staves. Dis amovable ring, moved outward and inward by any suitable means whichcontrols the position of the bars B. G are the thin sheet-metal liningpieces before referred to. M is a tapering tube of soft vulcanizedrubbermolded or otherwise produced, with the interior formed as smoothas the skill of workers in this material can attain. 'The elasticity ofthe material allows the small end to be contracted into less than itsdiameter as the staves are compressed together, and allows it to beexpanded tomore than its normal diameter by the stream of water when theparts are properly conditioned therefor. The rubber M is held at thelarge end by the following means: A shoulder, ct, is formed in theinte-rior of the portion A, preferably by means of aring riveted in toconfine the sheet metal D, and a ring, m, is pressed down upon this soas to apply within the rubber M, and to force it outward against theinterior of A,

Aand also'endwise against the shoulder a.

Thisring may be without threads. It may be armed with small points orToughened like a file on its exterior surface to aid in holding therubber more firmly, but my experiments indicate no necessity for suchnicety. I believe it will hold the rubber with perfect firmness Withouteven rougliening or cementing. It is pressed down by a follower-rin g, m,which is formed with a fine screw-thread on its exterior, whichengageswith a corresponding screw-thread in the interior of the part A.

I claim as my invention- The elastic liningpiece M, secured within theexpanding nozzle B D G, and serving, in combination therewith, toprevent any leakage through the same, substantially as and for thepurposes herein specified.

In testimony whereof I have hereunto set my hand this 26th day ofSeptember, 1874, in the presence of two subscribing witnesses.

WILLIAM LEGGETT. Witnesses: Y

W. C. DEY, E. VOLKMANN.

